oops my bad that was why i had posted it cause i thought you would have been the exact same but you dont have headers. with that said the vibrants may calm yours down a bit more. i noticed a little reduction in volume but it was most effective on the rasp. they definitely clean up the sound.
There are some mild gains from doing a true crossover (like an X) over the factory resonator, but it's not butt-dyno felt. The factory resonator is a rather poor cross-bank scavenging device in comparison, and also makes for an odd sound when compared with even a resonated X or H at the same volume.
I think the consensus is like 3 or so RWHP. As you said, not Earth shattering. Weight savings and sound is where your money is definitely going for most of those resonator deletes.
Agreed … seems like you'd be scraping this thing on everything!
Actually just looked at it again and it does in fact cross over on the same plane (ie. X is on the top).
I've always heard res delete x-pipe is good for a few hp up top, and res delete h-pipe is good for a little down low torque increase. I plan to get a base dyno and then another pull after installing an h-pipe just to see if there's any noticeable move in the torque curve. I just like the sound of the h over the x. As mentioned, weight reduction is probably the only real benefit other than a few more decibels.
The crossovers at that point are only for sound. They are too far back to offer any sort of scavenging effect like they are designed to do. As for power, a full 3” catback has shown not to pick up power even with no mufflers. There’s no way simply deleting the resonator will do anything but change sound and weight.
Proven again and again. However on the GT350, Jamaal Hameedi himself at the time said that there's actually a power difference between the GT350 and the GT350R because of the resonator delete. I think he said it's 5 repeatable horsepower. Always that one thorn on the stem. They opted not to re-certify the GT350R because of cost.
